2 * Copyright (C) 2009 Andy Spencer <spenceal@rose-hulman.edu>
4 * This program is free software: you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation, either version 3 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program. If not, see <http://www.gnu.org/licenses/>.
20 #include <gtk/gtkgl.h>
30 #include "radar-misc.h"
36 static void gis_plugin_radar_plugin_init(GisPluginInterface *iface);
37 static void gis_plugin_radar_expose(GisPlugin *_radar);
38 static GtkWidget *gis_plugin_radar_get_config(GisPlugin *_self);
39 G_DEFINE_TYPE_WITH_CODE(GisPluginRadar, gis_plugin_radar, G_TYPE_OBJECT,
40 G_IMPLEMENT_INTERFACE(GIS_TYPE_PLUGIN,
41 gis_plugin_radar_plugin_init));
42 static void gis_plugin_radar_plugin_init(GisPluginInterface *iface)
44 g_debug("GisPluginRadar: plugin_init");
45 /* Add methods to the interface */
46 iface->expose = gis_plugin_radar_expose;
47 iface->get_config = gis_plugin_radar_get_config;
49 /* Class/Object init */
50 static void gis_plugin_radar_init(GisPluginRadar *self)
52 g_debug("GisPluginRadar: class_init");
55 self->cur_triangles = NULL;
56 self->cur_num_triangles = 0;
58 self->config_body = gtk_alignment_new(0, 0, 1, 1);
59 gtk_container_set_border_width(GTK_CONTAINER(self->config_body), 5);
60 gtk_container_add(GTK_CONTAINER(self->config_body), gtk_label_new("No radar loaded"));
62 static void gis_plugin_radar_dispose(GObject *gobject)
64 g_debug("GisPluginRadar: dispose");
65 GisPluginRadar *self = GIS_PLUGIN_RADAR(gobject);
66 g_signal_handler_disconnect(self->view, self->time_changed_id);
68 G_OBJECT_CLASS(gis_plugin_radar_parent_class)->dispose(gobject);
70 static void gis_plugin_radar_finalize(GObject *gobject)
72 g_debug("GisPluginRadar: finalize");
73 GisPluginRadar *self = GIS_PLUGIN_RADAR(gobject);
75 G_OBJECT_CLASS(gis_plugin_radar_parent_class)->finalize(gobject);
78 static void gis_plugin_radar_class_init(GisPluginRadarClass *klass)
80 g_debug("GisPluginRadar: class_init");
81 GObjectClass *gobject_class = (GObjectClass*)klass;
82 gobject_class->dispose = gis_plugin_radar_dispose;
83 gobject_class->finalize = gis_plugin_radar_finalize;
86 /**************************
87 * Data loading functions *
88 **************************/
89 /* Convert a sweep to an 2d array of data points */
90 static void bscan_sweep(GisPluginRadar *self, Sweep *sweep, colormap_t *colormap,
91 guint8 **data, int *width, int *height)
93 /* Calculate max number of bins */
95 for (int i = 0; i < sweep->h.nrays; i++)
96 max_bins = MAX(max_bins, sweep->ray[i]->h.nbins);
98 /* Allocate buffer using max number of bins for each ray */
99 guint8 *buf = g_malloc0(sweep->h.nrays * max_bins * 4);
102 for (int ri = 0; ri < sweep->h.nrays; ri++) {
103 Ray *ray = sweep->ray[ri];
104 for (int bi = 0; bi < ray->h.nbins; bi++) {
105 /* copy RGBA into buffer */
106 //guint val = dz_f(ray->range[bi]);
107 guint8 val = (guint8)ray->h.f(ray->range[bi]);
108 guint buf_i = (ri*max_bins+bi)*4;
109 buf[buf_i+0] = colormap->data[val][0];
110 buf[buf_i+1] = colormap->data[val][1];
111 buf[buf_i+2] = colormap->data[val][2];
112 buf[buf_i+3] = colormap->data[val][3]; // TESTING
113 if (val == BADVAL || val == RFVAL || val == APFLAG ||
114 val == NOTFOUND_H || val == NOTFOUND_V || val == NOECHO) {
115 buf[buf_i+3] = 0x00; // transparent
122 *height = sweep->h.nrays;
126 /* Load a sweep as the active texture */
127 static void load_sweep(GisPluginRadar *self, Sweep *sweep)
129 GisOpenGL *opengl = self->opengl;
130 gis_opengl_begin(opengl);
131 self->cur_sweep = sweep;
134 bscan_sweep(self, sweep, self->cur_colormap, &data, &width, &height);
135 glDeleteTextures(1, &self->cur_sweep_tex);
136 glGenTextures(1, &self->cur_sweep_tex);
137 glBindTexture(GL_TEXTURE_2D, self->cur_sweep_tex);
138 glPixelStorei(GL_PACK_ALIGNMENT, 1);
139 glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
140 glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
141 glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
142 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, width, height, 0,
143 GL_RGBA, GL_UNSIGNED_BYTE, data);
145 gis_opengl_redraw(opengl);
146 gis_opengl_end(opengl);
149 static void load_colormap(GisPluginRadar *self, gchar *table)
151 /* Set colormap so we can draw it on expose */
152 for (int i = 0; colormaps[i].name; i++)
153 if (g_str_equal(colormaps[i].name, table))
154 self->cur_colormap = &colormaps[i];
157 /* Add selectors to the config area for the sweeps */
158 static void on_sweep_clicked(GtkRadioButton *button, gpointer _self);
159 static void load_radar_gui(GisPluginRadar *self, Radar *radar)
161 /* Clear existing items */
162 GtkWidget *child = gtk_bin_get_child(GTK_BIN(self->config_body));
164 gtk_widget_destroy(child);
167 guint rows = 1, cols = 1, cur_cols;
168 gchar row_label_str[64], col_label_str[64], button_str[64];
169 GtkWidget *row_label, *col_label, *button = NULL, *elev_box = NULL;
170 GtkWidget *table = gtk_table_new(rows, cols, FALSE);
172 for (guint vi = 0; vi < radar->h.nvolumes; vi++) {
173 Volume *vol = radar->v[vi];
174 if (vol == NULL) continue;
175 rows++; cols = 1; elev = 0;
178 g_snprintf(row_label_str, 64, "<b>%s:</b>", vol->h.type_str);
179 row_label = gtk_label_new(row_label_str);
180 gtk_label_set_use_markup(GTK_LABEL(row_label), TRUE);
181 gtk_misc_set_alignment(GTK_MISC(row_label), 1, 0.5);
182 gtk_table_attach(GTK_TABLE(table), row_label,
183 0,1, rows-1,rows, GTK_FILL,GTK_FILL, 5,0);
185 for (guint si = 0; si < vol->h.nsweeps; si++) {
186 Sweep *sweep = vol->sweep[si];
187 if (sweep == NULL || sweep->h.elev == 0) continue;
188 if (sweep->h.elev != elev) {
190 elev = sweep->h.elev;
193 g_object_get(table, "n-columns", &cur_cols, NULL);
194 if (cols > cur_cols) {
195 g_snprintf(col_label_str, 64, "<b>%.2f°</b>", elev);
196 col_label = gtk_label_new(col_label_str);
197 gtk_label_set_use_markup(GTK_LABEL(col_label), TRUE);
198 gtk_widget_set_size_request(col_label, 50, -1);
199 gtk_table_attach(GTK_TABLE(table), col_label,
200 cols-1,cols, 0,1, GTK_FILL,GTK_FILL, 0,0);
203 elev_box = gtk_hbox_new(TRUE, 0);
204 gtk_table_attach(GTK_TABLE(table), elev_box,
205 cols-1,cols, rows-1,rows, GTK_FILL,GTK_FILL, 0,0);
210 g_snprintf(button_str, 64, "%3.2f", elev);
211 button = gtk_radio_button_new_with_label_from_widget(
212 GTK_RADIO_BUTTON(button), button_str);
213 gtk_widget_set_size_request(button, -1, 26);
214 //button = gtk_radio_button_new_from_widget(GTK_RADIO_BUTTON(button));
215 //gtk_widget_set_size_request(button, -1, 22);
216 g_object_set(button, "draw-indicator", FALSE, NULL);
217 gtk_box_pack_end(GTK_BOX(elev_box), button, TRUE, TRUE, 0);
219 g_object_set_data(G_OBJECT(button), "type", vol->h.type_str);
220 g_object_set_data(G_OBJECT(button), "sweep", sweep);
221 g_signal_connect(button, "clicked", G_CALLBACK(on_sweep_clicked), self);
224 gtk_container_add(GTK_CONTAINER(self->config_body), table);
225 gtk_widget_show_all(table);
228 static void _gis_plugin_radar_grid_set(GRIDCELL *grid, int gi, Ray *ray, int bi)
230 Range range = ray->range[bi];
232 double angle = d2r(ray->h.azimuth);
233 double tilt = d2r(ray->h.elev);
235 double lx = sin(angle);
236 double ly = cos(angle);
237 double lz = sin(tilt);
239 double dist = bi*ray->h.gate_size + ray->h.range_bin1;
241 grid->p[gi].x = lx*dist;
242 grid->p[gi].y = ly*dist;
243 grid->p[gi].z = lz*dist;
245 guint8 val = (guint8)ray->h.f(ray->range[bi]);
246 if (val == BADVAL || val == RFVAL || val == APFLAG ||
247 val == NOTFOUND_H || val == NOTFOUND_V || val == NOECHO ||
250 grid->val[gi] = (float)val;
251 //g_debug("(%.2f,%.2f,%.2f) - (%.0f,%.0f,%.0f) = %d",
252 // angle, tilt, dist,
259 /* Load a radar from a decompressed file */
260 static void load_radar(GisPluginRadar *self, gchar *radar_file)
262 char *dir = g_path_get_dirname(radar_file);
263 char *site = g_path_get_basename(dir);
265 g_debug("GisPluginRadar: load_radar - Loading new radar");
266 RSL_read_these_sweeps("all", NULL);
267 Radar *radar = self->cur_radar = RSL_wsr88d_to_radar(radar_file, site);
269 g_warning("fail to load radar: path=%s, site=%s", radar_file, site);
276 /* Load the surface */
277 if (self->cur_triangles) {
278 g_free(self->cur_triangles);
279 self->cur_triangles = NULL;
281 self->cur_num_triangles = 0;
283 for (guint vi = 0; vi < radar->h.nvolumes; vi++) {
284 if (radar->v[vi] == NULL) continue;
286 for (guint si = 0; si+1 < radar->v[vi]->h.nsweeps; si++) {
287 Sweep *sweep0 = radar->v[vi]->sweep[si+0];
288 Sweep *sweep1 = radar->v[vi]->sweep[si+1];
290 //g_debug("_gis_plugin_radar_expose: sweep[%3d-%3d] -- nrays = %d, %d",
291 // si, si+1,sweep0->h.nrays, sweep1->h.nrays);
293 /* Skip super->regular resolution switch for now */
294 if (sweep0 == NULL || sweep0->h.elev == 0 ||
295 sweep1 == NULL || sweep1->h.elev == 0 ||
296 sweep0->h.nrays != sweep1->h.nrays)
299 /* We repack the arrays so that raysX[0] is always north, etc */
300 Ray **rays0 = g_malloc0(sizeof(Ray*)*sweep0->h.nrays);
301 Ray **rays1 = g_malloc0(sizeof(Ray*)*sweep1->h.nrays);
303 for (guint ri = 0; ri < sweep0->h.nrays; ri++)
304 rays0[(guint)(sweep0->ray[ri]->h.azimuth * sweep0->h.nrays / 360)] =
306 for (guint ri = 0; ri < sweep1->h.nrays; ri++)
307 rays1[(guint)(sweep1->ray[ri]->h.azimuth * sweep1->h.nrays / 360)] =
310 for (guint ri = 0; ri+x < sweep0->h.nrays; ri+=x) {
311 //g_debug("_gis_plugin_radar_expose: ray[%3d-%3d] -- nbins = %d, %d, %d, %d",
313 // rays0[ri ]->h.nbins,
314 // rays0[ri+1]->h.nbins,
315 // rays1[ri ]->h.nbins,
316 // rays1[ri+1]->h.nbins);
318 for (guint bi = 0; bi+x < rays1[ri]->h.nbins; bi+=x) {
320 _gis_plugin_radar_grid_set(&grid, 7, rays0[(ri )%sweep0->h.nrays], bi+x);
321 _gis_plugin_radar_grid_set(&grid, 6, rays0[(ri+x)%sweep0->h.nrays], bi+x);
322 _gis_plugin_radar_grid_set(&grid, 5, rays0[(ri+x)%sweep0->h.nrays], bi );
323 _gis_plugin_radar_grid_set(&grid, 4, rays0[(ri )%sweep0->h.nrays], bi );
324 _gis_plugin_radar_grid_set(&grid, 3, rays1[(ri )%sweep0->h.nrays], bi+x);
325 _gis_plugin_radar_grid_set(&grid, 2, rays1[(ri+x)%sweep0->h.nrays], bi+x);
326 _gis_plugin_radar_grid_set(&grid, 1, rays1[(ri+x)%sweep0->h.nrays], bi );
327 _gis_plugin_radar_grid_set(&grid, 0, rays1[(ri )%sweep0->h.nrays], bi );
330 int n = march_one_cube(grid, 40, tris);
332 self->cur_triangles = g_realloc(self->cur_triangles,
333 (self->cur_num_triangles+n)*sizeof(TRIANGLE));
334 for (int i = 0; i < n; i++) {
335 //g_debug("triangle: ");
336 //g_debug("\t(%f,%f,%f)", tris[i].p[0].x, tris[i].p[0].y, tris[i].p[0].z);
337 //g_debug("\t(%f,%f,%f)", tris[i].p[1].x, tris[i].p[1].y, tris[i].p[1].z);
338 //g_debug("\t(%f,%f,%f)", tris[i].p[2].x, tris[i].p[2].y, tris[i].p[2].z);
339 self->cur_triangles[self->cur_num_triangles+i] = tris[i];
341 self->cur_num_triangles += n;
346 break; // Exit after first volume (reflectivity)
350 /* Load the first sweep by default */
351 if (radar->h.nvolumes < 1 || radar->v[0]->h.nsweeps < 1) {
352 g_warning("No sweeps found\n");
354 /* load first available sweep */
355 for (int vi = 0; vi < radar->h.nvolumes; vi++) {
356 if (radar->v[vi]== NULL) continue;
357 for (int si = 0; si < radar->v[vi]->h.nsweeps; si++) {
358 if (radar->v[vi]->sweep[si]== NULL) continue;
359 load_colormap(self, radar->v[vi]->h.type_str);
360 load_sweep(self, radar->v[vi]->sweep[si]);
367 load_radar_gui(self, radar);
374 GisPluginRadar *self;
378 static void decompressed_cb(GPid pid, gint status, gpointer _udata)
380 g_debug("GisPluginRadar: decompressed_cb");
381 decompressed_t *udata = _udata;
383 g_warning("wsr88ddec exited with status %d", status);
386 load_radar(udata->self, udata->radar_file);
387 g_spawn_close_pid(pid);
388 g_free(udata->radar_file);
392 static void cache_chunk_cb(char *path, goffset cur, goffset total, gpointer _self)
394 GisPluginRadar *self = GIS_PLUGIN_RADAR(_self);
395 double percent = (double)cur/total;
397 //g_message("GisPluginRadar: cache_chunk_cb - %lld/%lld = %.2f%%",
398 // cur, total, percent*100);
400 gtk_progress_bar_set_fraction(GTK_PROGRESS_BAR(self->progress_bar), MIN(percent, 1.0));
402 gchar *msg = g_strdup_printf("Loading radar... %5.1f%% (%.2f/%.2f MB)",
403 percent*100, (double)cur/1000000, (double)total/1000000);
404 gtk_label_set_text(GTK_LABEL(self->progress_label), msg);
408 static void cache_done_cb(char *path, gboolean updated, gpointer _self)
410 g_debug("GisPluginRadar: cache_done_cb - updated = %d", updated);
411 GisPluginRadar *self = GIS_PLUGIN_RADAR(_self);
412 char *decompressed = g_strconcat(path, ".raw", NULL);
413 if (!updated && g_file_test(decompressed, G_FILE_TEST_EXISTS)) {
414 load_radar(self, decompressed);
418 decompressed_t *udata = g_malloc(sizeof(decompressed_t));
420 udata->radar_file = decompressed;
421 g_debug("GisPluginRadar: cache_done_cb - File updated, decompressing..");
422 char *argv[] = {"wsr88ddec", path, decompressed, NULL};
424 GError *error = NULL;
426 NULL, // const gchar *working_directory,
427 argv, // gchar **argv,
428 NULL, // gchar **envp,
430 G_SPAWN_DO_NOT_REAP_CHILD,
431 // GSpawnFlags flags,
432 NULL, // GSpawnChildSetupFunc child_setup,
433 NULL, // gpointer user_data,
434 &pid, // GPid *child_pid,
435 &error); // GError **error
437 g_warning("failed to decompress WSR88D data: %s",
441 g_child_watch_add(pid, decompressed_cb, udata);
448 static void on_sweep_clicked(GtkRadioButton *button, gpointer _self)
450 GisPluginRadar *self = GIS_PLUGIN_RADAR(_self);
451 load_colormap(self, g_object_get_data(G_OBJECT(button), "type" ));
452 load_sweep (self, g_object_get_data(G_OBJECT(button), "sweep"));
455 static void on_time_changed(GisView *view, const char *time, gpointer _self)
457 GisPluginRadar *self = GIS_PLUGIN_RADAR(_self);
458 g_debug("GisPluginRadar: on_time_changed - setting time=%s", time);
459 // format: http://mesonet.agron.iastate.edu/data/nexrd2/raw/KABR/KABR_20090510_0323
460 char *site = gis_view_get_site(view);
461 char *path = g_strdup_printf("nexrd2/raw/%s/%s_%s", site, site, time);
463 /* Set up progress bar */
464 GtkWidget *child = gtk_bin_get_child(GTK_BIN(self->config_body));
465 if (child) gtk_widget_destroy(child);
467 GtkWidget *vbox = gtk_vbox_new(FALSE, 10);
468 gtk_container_set_border_width(GTK_CONTAINER(vbox), 10);
469 self->progress_bar = gtk_progress_bar_new();
470 self->progress_label = gtk_label_new("Loading radar...");
471 gtk_box_pack_start(GTK_BOX(vbox), self->progress_bar, FALSE, FALSE, 0);
472 gtk_box_pack_start(GTK_BOX(vbox), self->progress_label, FALSE, FALSE, 0);
473 gtk_container_add(GTK_CONTAINER(self->config_body), vbox);
474 gtk_widget_show_all(self->config_body);
478 RSL_free_radar(self->cur_radar);
479 self->cur_radar = NULL;
480 self->cur_sweep = NULL;
481 gis_opengl_redraw(self->opengl);
483 /* Start loading the new radar */
485 soup_session_abort(self->soup);
488 gchar *base = gis_prefs_get_string(self->prefs, "aweather/nexrad_url");
489 if (gis_world_get_offline(self->world))
490 self->soup = cache_file(base, path, GIS_ONCE,
491 cache_chunk_cb, cache_done_cb, self);
493 self->soup = cache_file(base, path, GIS_UPDATE,
494 cache_chunk_cb, cache_done_cb, self);
501 GisPluginRadar *gis_plugin_radar_new(GisWorld *world, GisView *view, GisOpenGL *opengl, GisPrefs *prefs)
503 /* TODO: move to constructor if possible */
504 g_debug("GisPluginRadar: new");
505 GisPluginRadar *self = g_object_new(GIS_TYPE_PLUGIN_RADAR, NULL);
508 self->opengl = opengl;
510 self->time_changed_id = g_signal_connect(view, "time-changed",
511 G_CALLBACK(on_time_changed), self);
515 static GtkWidget *gis_plugin_radar_get_config(GisPlugin *_self)
517 GisPluginRadar *self = GIS_PLUGIN_RADAR(_self);
518 return self->config_body;
521 static void gis_plugin_radar_expose(GisPlugin *_self)
523 GisPluginRadar *self = GIS_PLUGIN_RADAR(_self);
524 g_debug("GisPluginRadar: expose");
525 if (self->cur_sweep == NULL)
527 Sweep *sweep = self->cur_sweep;
530 /* Draw the surface */
531 glMatrixMode(GL_MODELVIEW);
533 glDisable(GL_TEXTURE_2D);
534 float light_ambient[] = {0.1f, 0.1f, 0.0f};
535 float light_diffuse[] = {0.9f, 0.9f, 0.9f};
536 float light_position[] = {-300000.0f, 500000.0f, 400000.0f, 1.0f};
537 glLightfv(GL_LIGHT0, GL_AMBIENT, light_ambient);
538 glLightfv(GL_LIGHT0, GL_DIFFUSE, light_diffuse);
539 glLightfv(GL_LIGHT0, GL_POSITION, light_position);
541 glEnable(GL_LIGHTING);
542 glEnable(GL_COLOR_MATERIAL);
543 glColor4f(1,1,1,0.75);
544 g_debug("ntri=%d", self->cur_num_triangles);
545 glBegin(GL_TRIANGLES);
546 for (int i = 0; i < self->cur_num_triangles; i++) {
547 TRIANGLE t = self->cur_triangles[i];
548 do_normal(t.p[0].x, t.p[0].y, t.p[0].z,
549 t.p[1].x, t.p[1].y, t.p[1].z,
550 t.p[2].x, t.p[2].y, t.p[2].z);
551 glVertex3f(t.p[0].x, t.p[0].y, t.p[0].z);
552 glVertex3f(t.p[1].x, t.p[1].y, t.p[1].z);
553 glVertex3f(t.p[2].x, t.p[2].y, t.p[2].z);
560 glDisable(GL_LIGHTING);
561 glDisable(GL_COLOR_MATERIAL);
562 glMatrixMode(GL_MODELVIEW);
564 glBindTexture(GL_TEXTURE_2D, self->cur_sweep_tex);
565 glEnable(GL_TEXTURE_2D);
566 glDisable(GL_ALPHA_TEST);
568 glBegin(GL_QUAD_STRIP);
569 for (int ri = 0; ri <= sweep->h.nrays; ri++) {
572 if (ri < sweep->h.nrays) {
573 ray = sweep->ray[ri];
574 angle = d2r(ray->h.azimuth - ((double)ray->h.beam_width/2.));
576 /* Do the right side of the last sweep */
577 ray = sweep->ray[ri-1];
578 angle = d2r(ray->h.azimuth + ((double)ray->h.beam_width/2.));
581 double lx = sin(angle);
582 double ly = cos(angle);
584 double near_dist = ray->h.range_bin1;
585 double far_dist = ray->h.nbins*ray->h.gate_size + ray->h.range_bin1;
587 /* (find middle of bin) / scale for opengl */
589 glTexCoord2f(0.0, (double)ri/sweep->h.nrays-0.01);
590 glVertex3f(lx*near_dist, ly*near_dist, 2.0);
593 // todo: correct range-height function
594 double height = sin(d2r(ray->h.elev)) * far_dist;
595 glTexCoord2f(1.0, (double)ri/sweep->h.nrays-0.01);
596 glVertex3f(lx*far_dist, ly*far_dist, height);
598 //g_print("ri=%d, nr=%d, bw=%f\n", _ri, sweep->h.nrays, sweep->h.beam_width);
604 //glTexCoord2d( 0., 0.); glVertex3f(-500., 0., 0.); // bot left
605 //glTexCoord2d( 0., 1.); glVertex3f(-500., 500., 0.); // top left
606 //glTexCoord2d( 1., 1.); glVertex3f( 0., 500., 3.); // top right
607 //glTexCoord2d( 1., 0.); glVertex3f( 0., 0., 3.); // bot right
610 /* Print the color table */
611 glDisable(GL_TEXTURE_2D);
612 glDisable(GL_DEPTH_TEST);
613 glMatrixMode(GL_MODELVIEW ); glPushMatrix(); glLoadIdentity();
614 glMatrixMode(GL_PROJECTION); glPushMatrix(); glLoadIdentity();
617 for (i = 0; i < 256; i++) {
618 glColor4ub(self->cur_colormap->data[i][0],
619 self->cur_colormap->data[i][1],
620 self->cur_colormap->data[i][2],
621 self->cur_colormap->data[i][3]);
622 glVertex3f(-1.0, (float)((i ) - 256/2)/(256/2), 0.0); // bot left
623 glVertex3f(-1.0, (float)((i+1) - 256/2)/(256/2), 0.0); // top left
624 glVertex3f(-0.9, (float)((i+1) - 256/2)/(256/2), 0.0); // top right
625 glVertex3f(-0.9, (float)((i ) - 256/2)/(256/2), 0.0); // bot right
628 glEnable(GL_DEPTH_TEST);
629 glEnable(GL_ALPHA_TEST);
630 glMatrixMode(GL_PROJECTION); glPopMatrix();
631 glMatrixMode(GL_MODELVIEW ); glPopMatrix();